Automatic shut-off nozzle



@et 21, B924. ,5jl2,306

B. J. PEPPER v AUTOMATIC SHUT-OFF Nozzms:

Filed Feb. 11. 1921 9 J6 j f5 @zz 55 Il Y 'n Qngmvm.

Patented Get. 2l, 1924.V

nutren stares isi-aste earner orties,

BYRON J'. PEPPER, 0F FORT WAYNE, INDIANA, ASSIGNOR T0 S. F. BOWSEB, & CO., INC.,

A CORPORATION 0F INDIANA.

AUTOMATIC SHUT-OFF NOZZLE,

shut off nozzle that shall be automatic in its action and adapted particularly for use with dispensingapparatus handling comparatively heavy or viscous fluids such as lubricating oil and vthe like, although adapted also for lighter liquids. o

In handling viscous materials such as lubricating oils considerable difficulty same'through pipe or hose as in .supplying motor cars and various machines with the liquid lubricants which owing'to their viscosity tend or hose and continue to drip for a long time after the pump orother means supplying' the liquid have been caused' to cease their operation. Where oils are handled by rst umping them into a receptacle this dithculty is multiplied with resulting waste of time as well as causing waste of oil and inconvenience of causing same to be scattered over the premises. e

The invention as embodied in the present improved nozzle is designed to overcome the diiliculties mentioned, it being 'so arranged as to shut oil' 'automatically the flow ofl liquid being discharged at or near the tip or vdischarge end of the nozzle at the moment the pump has ceased to operate, and being so constructed as to keep the nozzle sealed t1ght enough that it will not `allow a dripor loss less pressure of oil from slight expansion or handling unshould be put on the pipe or hose by the ,further operation of the pump.

It is a further object `of the invention to provide a nozzle for the delivery pipe orA hose of a pump or other dispensing device which shall be normally closed, but arranged so that the controlling valve thereof will open upon a redetermined pressure being placed upon tlie liquid in the pipe or hose by the dispensing device as a pump with which my improved nozzle is adapted to be used.

has been experienced in trying `to deliver the Ito cling to the inside of the pipe n is a furl-,her Object of the; invention to provide an improved valve mechanism which v shall have an improve l valve and seat in which the valve shall be held normally closed by elastic means, but arranged to open upon a predetermined pressure from the inlet side of said shut off nozzle.

It isa further object of the invention to i provide in an automatic valve improved means for assembling the valve, the seat and the valve operating 4and controlling means.

Other objects of the invention will appear from the following description whichis di-- rected to the preferred embodiment of the invention as shown also in the accompanying drawing forming 'a part of the specification, the invention being finally set forth with greater particul-arity in the appended claims.

In Ithe said drawing Fig. 1 is a longitudinal sectional view through a shut oil nozzle showing the constructions of' the nozzle and the details of the valve operating' and controllingmechanism.

Fig. 2' is a viewsimilar to Fig. 1, but showing the valve operated to open position.-

For convenience in manufacture and assembly as well as for opening my improved shut off nozzle for the purpose of gaining.

access to the valve operating and controlling means I construct the pipe section 10 of the nozzlewith a hollow interior or passageway,

one end of. the 4same being screw threaded,

as indicatedby reference character 11, for the purpose of attaching the same to la threaded nipple on the end of a pipe or hose. 12 is an intermediate-enlarged chamber, the sameV communicating with the threaded end portion 11 by means ofl the port or opening 13. The end lof the section 10 opposite the screw threaded end 11 is also screwthreaded internally as at 14 to take the externally screw threaded nippler extends outside-.the intake opening of this section so as to be within the enlarged housing or enclosure 12 formed in the pipe section 10. The outlet port at 18 of the section 16 is designed KAto'be`closed by a ball valve .or poppet 25. This ball valve is preferably made of fiber on account of its lightness, although any other suitable materiel may be employed, and is perfectly spherical in shape so that it will seat' on the cyl-indrically shaped end of the valve seat 18. A rodl 26 passes through an opening bored on a diameter of the valve and is preferably connected to plate 27 by having an angularly turned end thereon passed through' an opening in said plate, as indicated at 28. The plate 27 is mounted to rock Aon pivot pin 29 carried on the extension `or arm 24 and it has a pin thereon to which is attached one end lof a coil spring-31,- the other end of which is attached to a similar pin 32 fixed on the arm or projection 24. The free end of the rod 26 is screw threaded as at 33 and is provided with a pair of adjusting nuts position on the seat 18, as indicated in Fig.

1, the rod 26 willbe nearest the pin 29 which supports the plate`27 vand at the same time thevplate 27 will have rotated until the pin 30 will be at a maximum distance below the line passing-through. the centers of the pins 29 and 32 so that at this position the power which the spring 31 will exert upon the ball valve 25 will be at its maximum, thus tending to hold the ball valve 25 lirmly and securely upon its Seat. Consequently, when the valve lis closed the 4pressure on it will be at the maximum.

It will be understood thatithe nozzle is designed particularly for use with pumps and other dispensing apparatus in which a heavy viscous fluid is to be discharged through the nozzle underpressure, and with the valve mechanism in the position shown.

in Fig. 1 it will be seen that when sufficient pressure is exerted upon the valve 25 by the liquid the ball valve will lift from its `seat andthe mechanism will then move to the position shown -inv Fig. 2, in which posiltion the force exerted on the va would only be a small fraction of the t nsion of the spring-in this position, because as the valve opens to the position shown in Fig. 2, although the spring will during the opening operation continue to expand, the pivotal connection 28 willv rotate around with the neiaeoe v Y plate 27 so that the lever arm of the plate will lengthen and at the same time the pin 3() will move so that it will tend to lie in the same straight line as the' pivot pin 29 and the spring pin 32 thus decreasing the length of the power arm, and consequently decreasing the e'ect of the spring on the rod 26 and the ball valve 25. In this manner after ow of the liquid is once started by the pump or other d1spensing apparatus the ball valve will stay from its seat without causing more than a minimum amount of extra work to be performed by the pump or dispensing apparatus on account of the valve.l When however, the flow of the liquid has ceased through the nozzle obviously the ball valve will immediately find its seat under the action of the spring 31 after which considerable pressure will have to be eX- erted to start the flow anew.

It will be seen that the construction of nozzle as described and provided by me insures an easy flow as long as liquid is passing through the nozzle and it results in the valve of the nozzle being sealed tight when the pumping ceases, so that any movement of ,theL hose or pipe or any slight pressure due to expansion will not open the valve of the nozzle but will be taken up by the elasticity of the hoseor pipe and the pump. The pressure necessary to start liquid through the nozzle, that is, to openthe valve from its initial closed position, may be regulated to.suit conditions of liquid being dispensed by means of the adjusting nuts 34, 35 on the threaded rod 26.

`While the preferred embodiment of the invention has been shown and particularly described it is not desired to be limited to the details for it Will'he apparent that 4persons skilled'in the art may resort to various modifications without departing from the purpose and spirit of my invention.

1. A- valve'nozzle for a liquid dispensing device comprising a'casing having a hollowW interior with inlet and outlet orifices leading thereto and therefrom, a valve, a valve seat, a spring controlled rotatable member all being contained within said casing and an operative connection between the valve and the said rotatable member.

2. A valve nozzle Vfor use with, a liquid dispensing device comprising a casing having a .hollow interior withinlet and outlet orifices lleading thereto and therefrom, a

valve, a valve seat, a spring controlled pivoted member, .and means forv connecting said spring controlled pivoted member with the valve .whereby'thelmaximum pressure of the spring controlled pivoted member will be exerted upon the valve in its closed position on the seat, said valve vseat and valve and said parts operably connected therewith `beingall housed on the interior of said casing.

lll@

1,512,308V la 3. A valve nozzle for dispensing liquids of the intermediate section, an arm at, the comprising three tubular metallic sections opposite end of the intermediate section, a screw threaded together, a valve seat on the lever pivotally connected intermediate its intermediate one of said screw -threaded secends with said arm, a spring connected with tions, an arm formed integrally on one end oneextremity o'said lever and 'with said of the intermediate section opposite thevsaid arm, a valve rod pivotally connected to the valve seat, a lever pivotally connected with opposite extremity of said arm, a spring controlling the movement ing longitudinally of the intermediate sec'- of said lever, a valve adapted to co-operate tion and beyond the said valve seat, and a with said valve seat, and means-for connectspherical valve member on the said valve ing said valve with said lever. rod co-operating with said valve seat,

4.. A valve nozzle for dispensing .liquids '6. A valve nozzle for dispensing liquids comprising three tubular metallic sections comprising a valve, a' valve seat, and 'means screw threaded together, a ball valve seat on for controlling said valve comprising a lever the intermediate one of said screw threaded fulcrumed intermediate its ends, elastic sections, an arm formed integrally on one means connected to one end of said lever, a end of the intermediate section opposite the rod carrying the said valve at one end theresaid ball valve seat, a lever pivotally conof and 'at its opposite extremity being piv.

nected with *said arm, aA spring controlling otally connected with the said lever whereby the movement fof said lever, a ball valve the said elastic means will constantly tend to adapted to cooperate with said ball valve close the valve and will exert its maximum seat, and means for connecting said ball effect upon the valve when the valve is in valve with said lever. closed position on the' seat. 5. A valve nozzle for dispensing liquids .In testimony whereof I comprising three tubular sections screw name to this specification. threaded together, a'valve seat on one end BYRON J. PEPPER.

said' lever and extexidhave signed` 

